Keyvisual 2nd level navigation

POLRO® 2-support kiln

These days, thanks to optimisation of the precalciner system, a large number of rotary kilns fully meet the requirements of the burning process with a length to diameter ratio of up to 15:1.


With the POLRO® system from Polysius, a kiln with these dimensions can be built as a two-support version.


The POLRO® rotary kiln has a statically determined support configuration on only two roller stations and has a direct drive system. The kiln shell with its splined tyres rotates on self-aligning rollers, which automatically adjust themselves to the momentary running conditions. The kiln is directly driven via the rollers of the inlet-end roller station. This system supersedes the previously conventional girth gear and pinion mechanism. The POLRO® is rounded off by pneumatic inlet and outlet seals, hydraulic axial thrust system and air-cooled inlet trough.


Thanks to the statically determined support configuration, this kiln design is characterised by high operating reliability, minimal maintenance and inspection requirements and therefore very low operating costs.

More Info:
Brochure: PDF (603 K)
Animation: MPEG (3.2 M)